Melting point apparatus
تاريخ النشر : 0000-00-00 00:00:00
عدد المشاهدات : 121
تاريخ النشر : 0000-00-00 00:00:00
عدد المشاهدات : 121
Melting point apparatus
is a scientific instrument used to determine the melting point of a substance. While the outward designs of apparatuses can vary greatly most apparatuses
use a sample loaded into a sealed capillary (melting point capillary) that is then placed in the apparatuses. The sample is then heated, either by a heating block
or an oil bath, and as the temperature increases the sample is observed to determine when the phase change from solid to liquid occurs. The operator or the
machine records the temperature range starting with the initial phase change temperature and ending with the completed phase change temperature. The
temperature range that is determined can then be averaged to gain the melting point of the sample being examined. Apparatuses usually have a control panel
that allows the starting and final temperatures, as well as the temperature gradient (in units per minute) to be programmed. Some machines have several
channels which permit more than one sample to be tested at a time. The control panel might have buttons which allow the start and end of the melting point
range to be recorded.
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